Liquid separator



C. A. SANBORN.

LIQUID SEPARATOR.

APPLICATION FILED AUG.H. 1919.

Z 2 9 I 9 11 W A d e t H e lu a CORA A. SANBORN, 0F BROOKLYN, NEW YOR.

LIQUID SEPARATOR.

aaaeaa Specification of Letters Patent.

Patented Aug. 1, 1922.

Application filed August 11, 1919. Serial No.- 316,621.

To all wbomiit may concern:

Be it known that I, (101m A. SANnonN, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Liquid Separators, ofwhich the following is a specification.

This invention has to do with the provision of means for drawing oif theliquid in a receptacle, particularly the cream from the top of a bottleof milk by siphon action, one of the principal features of the inventionresiding in the fact that the means employed may be made of aluminum, orother light metal, which permits of their being kept in a. sanitarycondition without deterioration or loss of efiiciency.

Heretofore, devices for this general purpose have been so designed thatit was necessary to have one or more of the operating parts constructedof rubber or other elastic material. Such prior devices have been foundto be bothersome, of limited durability, and objectionable from asanitary standpoint, for the reason that the surfaces and pores of therubber parts absorb particles of cream and foreign matter, making itnecessary to sterilize after every use thereof. Sterilization,especially if by boiling, soon breaks down the structure of elasticbodies, and renders them incapable of functioning properly.

,A preferred embodiment of this invention, which overcomes all of theseobjections, is illustrated in the accompanying drawing which serves asthe basisof a mere detailed description which follows. Obviously,however,'the. invention is susceptible of other embodiments of variedconstructional form, wherefore, the drawing and description are to .betaken in an illustrative rather than in a limiting sense.

In the drawing- Fig. l is partly in elevation, and partly in verticalsection through the assembly of the invention in association with abottle of milk;

Fig. 2 is a detail of the annular supporting member; and

ig. 3 is a detail of the diaphragm.

In the embodiment shown, the operating arts comprise an annularsupporting member 10,'a diaphragm 16 and a siphon tube 20. Saidsupporting member comprises a convex sustaining flange 11 adapted torest upon the rim of a milk bottle 12, a depending vertical guide flange13 of such diameter as will cause it to fit tightly in the neck of saidbottle, and an annular strip 14, intermediate said sustaining flange 11and guide flange 13, adapted to seat within the internal annular groove15, provided on standard milk bottles to receive the closure diskscustomarily employed.

The diaphragm 16 is formed of a cylindrical shell 17 having an outwardlydisposed flange 18 at the'top thereof, and an annular convexed cap 19having a small vent 19 in the ridge thereof. The inner portion of saidcap is turned down to form a vertical margin of suflicient width toengage and firmly hold the short leg of siphon 20 in any aflixedposition therein.

The internal diameter of guide flange 13 and the external diameter ofthe cylindrical shell 17 are so proportioned that movement of the latterthrough the former will create a considerable degree of friction.

In operation, the supporting member 10 is placed upon the rim of a milkbottle, with the guide flange 13 bearing tightly against the neckthereof. The diaphragm 16 and siphon tube 20 are assembled with theshort leg of the latter partially projecting through the annular cap 19.Thus assembled, the lower end of cylindrical shell 17 is brought intoengagement with the guide flange as shown by dotted lines in Fig. 1,forming an air chamber within the diaphragm 16. In this position, thelower end of the short leg of the siphon tube should be Within the bodyof the cream in the bottle. With a finger tip of the operator coveringthe, vent 19*, the diaphragm is then pushed down, until the flange 18rests upon the strip- 14of the supporting member 10, when the finger tipis removed from the vent 19*. In the meantime the confined air withinthe diaphragm 16, having been subject to compression, has

forced a portion of the cream through the short leg, over the bend andinto the long leg of the siphon tube 20 thus initiating the siphonaction, which is continued, by the pressure of external air entering thediaphragm through the vent 19.

After the diaphragm has'reached the limit of its downward movement,attention should be given to see that the open end of the short leg ofthe siphon is positioned adjacent the lower level of the cream in thebottle, as the amount of liquid to be withdrawn in this I be deposited,being tention of air, and a siphon tube having one leg thereof infrictional engagement with said c'a v 2; A 1 iquid separator comprisingan annular sup orting member adapted to fit within the neo of areceptacle, a diaphragm provided with a cylindrical shell and an annularcap having a" vent therein, said diaphragm being adapted to slidethroughsaid supporting member and cooperating therewith to form a closure forretention of air, and a siphon tube having one leg thereof in 'a diaphrafrictional engagement with said cap.

3. A liquid separator comprising an annular supporting member having aconvex sustaining flange and a depending guide flange, gm provided witha cylindrical shell and with an annular cap having a vent therein, saiddiaphragm being adapted to slide against said form an air retainingclosure, and a siphon In Fig. 1 I have isa suitable re-- tube having oneleg thereof in guide flange and coop-- crating with the supportingmembertotube'having one'leg thereof in frictional engagement with said cap.

4. A liquid lar supporting member having a convex sus.-

taining flange adapted to rest upon therim separator comprising an annuof a receptacle and a depending guide flange adap/ed to fit within theneck o said receptacle, a diaphragm provided with a cylindrical shelland with an annular cap havin a vent therein and slidable within 'sai\guide flange, and a siphon tube having one 8 sa1d cap.

5. A liquid separatorcomprising an annular supporting member having aconvex sustaining flange adapted to rest-upon the rim of a receptacle, adepending guide-flange 4 adapted to fit within the neck' of saidreceptacle and an annular strip intermediate said flan es, a diaphragmhaving a cylindrical shel ,.-an outwardly disposed'flang'e at the topthereof and an annular convexed cap having a vent in the ridge thereof,said diaphragm being slidable within said sustaining member and adaptedto rest'thereupon through engagement of said outwardly disposed flangewithsaidstrip',

gagement with said cap.

thereofdn frictional engagement with and a siphon frictional en Inwitness whereof I have hereunto signed my name in-the presence of twosubscribing witnesses.

CORA SANBORN- Witnesses:

DENZIIJ S. BRADLEY, ELoIsn T. HENDRICKSON.

